Lesson 12-3: Properties of Size Changes (Day 123)

Lesson 12-3 of the U of Chicago text is called "Properties of Size Changes." In the modern Third Edition of the text, properties of size changes appear in Lesson 12-1.

This is what I wrote last year about today's lesson. Admittedly it isn't much.

Finally, here are the Geometry worksheets for today. They are based on Lesson 12-3, with an extra page for the proof of the Dilation Distance Theorem -- this proof comes directly from PARCC.

And I have nothing much else to say. So this is one of my shortest posts of the year!